Building block



M. M. MACK.

BUILDING BLOCK.

APPLICATION FILED mac. 6. 1920.

Patented. Jan. W, 19220 IEILTGN BI. llIAGK, OF W'EST CHECAG'Q,

ELLIITOIS.

BUILDING BLOCK.

Application filed December 6, 1920.

To all 207mm it may concern.-

Be it known that I, MILTON M. MACK, a citizen of the United States, residing at West Chicago, in the county of Du Fage and State of Illinois, have invented certain new and useful Improvements in Building Blocks, of which the following is a specification.

My invention relates to building blocks, and has for one of its objects the provision of a simple and efficient building block adapted to provide a plurality of dead air spaces which continue throughout a wall made up of said blocks.

A further object is the provision of building blocks having a plurality of spaced walls with a minimum amount of material extending crosswise of the block.

A still further object is the provision of building blocks suitable for forming generally curved portions with means for holding the blocks against relative displacement.

O her objects will appear hereinafter.

An embodiment of my invention is illustrated in the accompanying drawing, forming a part of this specification, and in which 1 is a view in perspective showing a fragment of a wall made of blocks embodying my invention.

Fig. 2 is a plan view of a block generally circular.

Fig. 3 is a fragment-a1 sectional view of a side wall and ceiling made of blocks embodying my invention.

Fig. 4; is a fragmental section showing an upright wall and roof portion of a building formed of blocks embodying my invention; and

Fig. 5 is a plan view of a half width of block embodying my invention.

Referring more particularly to the drawing. 1 have indicated in Fig. l a plurality f blocks which are identical in form and construction with. the exception of the ones forming the corners of a. building which are modified by having one end entirely closed.

lily improved block comprises a plurality of walls and in the present instance I have shown four of these, but it will be understood that a fewer or greater number may be provided when desired. These walls 6, 7, 8 and 9 are spaced apart by slots or spaces 10. The walls 6 and 7 are joined together at one end of the block by a portion 11. The walls 8 and 9 are joined together by a portion 12 Specification of Letters Patent.

Patented Jan. 1th 1&22.

Serial No. 228,431.

at the same end of the block as the walls 6 tion. Each block has a tongue 14 formed on the portion and adapted to engage the slot 10 at the middle of the next adjacent block, see the right hand portion of Fig. 1.

it the corners of the building I provide blocks having the middle slot 10 closed by a portion 15, see Fig. 1, so that the end part of: the blocl: is smootii, as clearly indicated. In the corner block the portion '13 is preferably set farther from the end of the block in middle slot .10 so as to provide a recess 1'6 for tongue 1a of the next block to fit into. This is clearly illustrated in the lefthand side of 1.

For usual buildingpurposes I provide the blocks substantially parallelepiped, but for the construction of silos or round buildings in horizontal section I preferably provide the walls generally circular, as clearly indicated in Fig. 2.

Inl ig. 3 l have shown a plurality of my blocks arranged to form a side wall and ceiling of a room. The blocks are placed generally circular in cross-section at the corner between the side wall and ceiling, and when so placed plaster or cement, as indicated at 17, in Fig. 3, may be placed in the angular spaces between the blocks. V hen the curve at the corner of the room is small it may be desirable to place small portions 18 in the outer sides of the angular spaces between adjacent blocks. as clearly indicated near the upper portion of F 3, then filling in the remainder of these angular spaces with plaster, cement or other desirable substances. When mounting my blocks in gen.- erally curved places such as just indicated l preferably provide bars 19, which are disposed in slots 10 and loci: the blocks against movement. The blocks may be raised to the tops of bars 19 and moved downwardly over the bars so that said bars will be in the slots, or when so desired, bars may be omitted from some of the slots so as to permit easily placing the blocks in the wall.

In Fig. l l have indicated a series of my -1nay be built around corners such as indicated in Fig. l, without having triangular spaces between them.

These blocks are designed. so that they fit snugly together in forming a wall so that a very thin sealing medium between the blocks will be necessary, although any desired thickness or composition of sealing material may be provided as desired.

In Fig. 5 I have indicated a half of my block formed as being split longitudinally and with a tongue 14: on the part 20 joining the two walls 21 and 22. This form is particularly desirable for making partitions and ceilings oi rooms, or in small bulldmgs might be used for outer walls also.

I claim:

1. A building block comprising a body having four substantially parallel walls with spacing slots between said walls, all of said slots being open from top to bottom of the block and from one end to adjacent the other end thereof with thetwo outside slots opening at one end of the block and the intermediate slot opening at the other end of the block.

' 2. A building block comprising a body intermediate slot opening at the other end of the block, and a tongue at the last mentioned end of the block adapted to engage the intermediate slot of a similar block in use.

3. A wall having straight and curved portions comprising blocks with a plurality of registering slots therein extending upwardly and downwardly in the wall, and bars disposed in said slots in said curved portions and extending into said straight portions.

l. A combined upright wall and roof por tion of a building comprising a continuous wall generally curved at the eaves of the building and made up of a plurality of staggered building blocks with slots extending upwardly and downwardly through the blocks, and bars extending through the slots at the eave portions of the root.

In testimony whereof I have signed my name to this specification on this 3rd day' of December, A. D. 1920.

MILTON M. MACK. 

